I'm sure others might respond more in the technical aspect but I would send them off to be serviced at either Ritas Vintage Audio or Rollands Hi Tech audio. The caps etc etc probably could use some replacing. From what I've read, it has been well worth the investment to have them serviced. The people that have, have said the amps come back sounding better. Plus if you plan on continuing to listen to music like that, you can be assured that you will have some amps that will last you for another 20 years or so.

Welcome Cindy! The 1.0t is a great amp. The capacitors (caps) might be bulging at the top. Take the cover off and look around, also check the board for cap leakage. Send them to Rita > http://www.ritasvintageaudio.net/

If you love these amps, it's well worth the investment. Welcome again and enjoy the forum > a great place to be!